1. A nutritional deficiency state characterized by relative insufficiency of one or more vitamins in the diet; manifested first by depletion of tissue levels, then by functional changes, and finally by appearance of morphologic lesions.
The definition information for hypovitaminosis is provided by Stedman's. You can search our medical dictionary here.
Stedman's, part of Lippincott Williams & Wilkins, provides a comprehensive line of health-science publications for healthcare professionals and medical students.